The slidable control button device provides inputs to an electronic communication device such as a smartphone. When the slidable control button is moved to positions within a grooved path, it acquires additional functionalities. These include (a) gaming console hand devices for both left and right hand thumbs of gamers, (b) pressing on the left or right edge of the button will control functions of software of apps, (c) motion detection (d) sending and receiving data related to measuring motion, speed or acceleration, temperature, and communicating with the software applications installed in the smartphone.